After getting in late last night I’m just getting around to providing a forecast for the BC Day long weekend -but before I do, a word from our sponsor…..
One of the challenges in forecasting weather for the South Island is the variability of conditions that can exist between inland and coastal areas. During sunny, hot days the land warms much more rapidly than the ocean and as a result the air over the land warms and rises like a hot air balloon. This rising air is replaced by cool moist air from over the ocean moving on to the land at the surface - creating on-shore flow or ”sea-breeze”. As Islanders know, although it can be warm inland, at the shore it can be breezy and cool.
This weekend a combination of the Pacific High and an upper ridge will offer warm temperatures, sunny skies and sea breeze conditions. The interesting feature will be the marine air flowing over the Island later this weekend in response to the hot temperatures forecast for the BC Interior – so expect a bit of cooling on BC Day.
Friday: Sunny, winds light and highs of 26 C.
Saturday: Sunny with afternoon breezes and highs of 27 C.
Sunday: Sunny through the day then thin cloud entering the picture late in the afternoon. Afternoon breezes and highs of 28 C.
Monday: Thin cloud in the a.m., then clearing though the day. Winds light with highs of 25 C.
weatherwit
